C#文件监控对象FileSystemWatcher实例，通过监控文件创建、修改、删除、重命名对服务器数据进行实时备份

先上图，简单的windorm界面；此为最初的版本，后续会增加监听多个源目录的功能、log功能、进度条展示功能等。

1、初始化监听

 /// <summary>
        /// 初始化监听
        /// </summary>
        /// <param name="StrWarcherPath">需要监听的目录</param>
        /// <param name="FilterType">需要监听的文件类型(筛选器字符串)</param>
        /// <param name="IsEnableRaising">是否启用监听</param>
        /// <param name="IsInclude">是否监听子目录</param>
        private static void WatcherStrat(string StrWarcherPath, string FilterType, bool IsEnableRaising, bool IsInclude)
        {
            //初始化监听
            watcher.BeginInit();
            //设置监听文件类型
            watcher.Filter = FilterType;
            //设置是否监听子目录
            watcher.IncludeSubdirectories = IsInclude;
            //设置是否启用监听?
            watcher.EnableRaisingEvents = IsEnableRaising;
            //设置需要监听的更改类型(如:文件或者文件夹的属性,文件或者文件夹的创建时间;NotifyFilters枚举的内容)
            watcher.NotifyFilter = NotifyFilters.Attributes | NotifyFilters.CreationTime | NotifyFilters.DirectoryName | NotifyFilters.FileName | NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.Security | NotifyFilters.Size;
            //设置监听的路径
            watcher.Path = StrWarcherPath;
            //注册创建文件或目录时的监听事件
            //watcher.Created += new FileSystemEventHandler(watch_created);
            //注册当指定目录的文件或者目录发生改变的时候的监听事件
            watcher.Changed += new FileSystemEventHandler(watch_changed);
            //注册当删除目录的文件或者目录的时候的监听事件
            watcher.Deleted += new FileSystemEventHandler(watch_deleted);
            //当指定目录的文件或者目录发生重命名的时候的监听事件
            watcher.Renamed += new RenamedEventHandler(watch_renamed);
            //结束初始化
            watcher.EndInit();
        }

2、启动或者停止监听

/// <summary>
        /// 启动或者停止监听
        /// </summary>
        /// <param name="IsEnableRaising">True:启用监听,False:关闭监听</param>
        private void WatchStartOrSopt(bool IsEnableRaising)
        {
            watcher.EnableRaisingEvents = IsEnableRaising;
        }

3、监听以后的事件

 /// <summary>
        /// 创建文件或者目录时的监听事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void watch_created(object sender, FileSystemEventArgs e)
        {
            FugaiFile m = new FugaiFile();
            m.sender = sender;
            m.e = e;
            Thread t = new Thread(new ThreadStart(m.C));
            t.Start();                                                                   //启动线程
        }

 private static void watch_changed(object sender, FileSystemEventArgs e)
        {
            FugaiFile m = new FugaiFile();
            m.sender = sender;
            m.e = e;

            Thread t = new Thread(new ThreadStart(m.C));
            t.Start();

        }

        private static void watch_deleted(object sender, FileSystemEventArgs e)
        {
            //事件内容
            MessageBox.Show("监听到删除事件" + e.FullPath);
        }

        private static void watch_renamed(object sender, RenamedEventArgs e)
        {
            FugaiFile m = new FugaiFile();
            m.sender = sender;
            m.e = e;

            Thread t = new Thread(new ThreadStart(m.C));
            t.Start();
        }

此处采用多线程的方式去复制文件，下面是复制文件的类

class FugaiFile
        {
            public object sender;
            public FileSystemEventArgs e;

            public void C()
            {
                //MessageBox.Show("监听到修改事件" + e.FullPath);
                //MessageBox.Show(e.Name + "监听到创建事件" + e.FullPath);
                String fullname = e.FullPath;
                string newpath = fullname.Replace(srcPath, TargetPath).Replace("\\" + e.Name, "");
                DirectoryInfo newFolder = new DirectoryInfo(newpath);
                if (!newFolder.Exists)
                {
                    newFolder.Create();
                }
                FileInfo aa = new FileInfo(e.FullPath);
                aa.CopyTo(newpath + "\\" + e.Name, true);
            }
        }